Khafaji Mawya A, Hagi Sarah K
Department of Radiology, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. E-mail.
Saudi Med J. 2014 Aug;35(8):879-81.
To determine the rejected rate of direct digital radiography (DRs) in our hospital, benchmark it with other institutes, and explore the causes of rejection.
Data were collected between June 2012 and May 2013 at King Abdulaziz University Hospital, Jeddah, Kingdom of Saudi Arabia. The rejected analysis was registered in the system, which is a built in software. Reasons for rejection could not be deleted, and no further imaging is allowed for the same patient without reporting the reason for rejection. Reasons for rejection are predefined by the machine.
Of 89,797 images that were acquired, 13,371 were rejected, with a rejection rate of 15%. Positioning errors were the main reason for rejection, followed by artifact 28.5%, and motion 17.1%. As for body parts pelvis, abdomen, spine, and knee were recorded as rejected with higher rates than the average.
This study has shown a number of unnecessary repeated imaging of patients. In addition, reject analysis in DR is proven to be an indicator for quality in imaging, the reasons of rejection that have high percentage for occurrence should be given more focus during patients scan.
确定我院直接数字化X线摄影（DR）的拒诊率，与其他机构进行对比，并探究拒诊原因。
收集2012年6月至2013年5月期间沙特阿拉伯王国吉达阿卜杜勒阿齐兹国王大学医院的数据。拒诊分析记录在系统中，该系统为内置软件。拒诊原因不可删除，未报告拒诊原因的同一患者不得进行进一步成像。拒诊原因由机器预先定义。
在采集的89797幅图像中，13371幅被拒诊，拒诊率为15%。定位错误是拒诊的主要原因，其次是伪影（28.5%）和运动伪影（17.1%）。至于身体部位，骨盆、腹部、脊柱和膝盖的拒诊率高于平均水平。
本研究显示存在一些患者不必要的重复成像情况。此外，DR中的拒诊分析被证明是成像质量的一个指标，在患者扫描过程中应更加关注发生率较高的拒诊原因。
